php extensions for other php versions installed via plesk

I have a plesk 12.5 on ubuntu 12.04.

with plesk 12.5 i have the ability to run multiple php versions. the "native" version is 5.3.10 i also installed 5.5
that is great, but the question is how to install php extensions for php verion that i installed via plesk.

i need the ssh2.so and, the native version that i installed for 5.3 does not work with 5.5.

i have a dev box with ubuntu 14 and php55, copying that ssh2.so does not work, the extensions expects some things on ubuntu that 12 does...

php extensions for other php versions installed via plesk